'You have to balance the players because they play a lot of matches in the next month, with the Europa League and the FA Cup.
"I know this player and he's a very good player", Emery went on.
A new contract for Mesut Ozil, making him the highest-paid player in the club's history, and signing Pierre-Emerick Aubameyang 12 months ago for a club-record fee have played a part in the lack of funds as Emery conceded the winter window will be more frugal for Arsenal.
Emery was also asked about rumours Arsenal are interested in Denis Suarez, with the midfielder on the fringes at Barcelona.More news: Poland Charges Chinese Huawei Manager for Espionage
Unai Emery has ruled out any permanent signings at Arsenal this month, with only loan deals a possibility.
He told Arsenal's official website: "I think the most important thing for me is hard work and that day-to-day learning".
"We can not sign (players) permanently", he said.
"We can only sign players later on". But at the moment I don't have news on that.More news: Apple Watchers Are Already Looking Toward the Next Next iPhones
"But I am happy with every player today, it is really some injuries that didn't help us in the last matches because we struggled with different injuries with the players".
"I know the club is working to find players who can help us, with this condition".
Some players have been taken aback by quite how intense Emery's sessions are since his arrival in the summer.
"We pushed him and he was playing three matches during the week, but not ninety minutes each match".More news: Details Over Top Sanders Advisor's Alleged Sexual Misconduct With Subordinate Emerge